Reusing system elements is not always free. Select the possible implications that might result from wanting to reuse a system element from an old system, in a new systema.If the reused element's specifications are uncertain, it must be reverse engineeredb.It is best to avoid the need to redesign elements of the new system to interface with the reused system elementc.It is best to avoid the need to redesign the architecture of the new system into which the reused element will be placedd.If the system architecture is flexible enough, then the system element can be reused as is